Networking. Tips and Secrets of Your Net

I write this article especially for IoT challenge. +100500 new weatherstations or wireless controlled switch will be nothing without internet connection

On this article i'll describe all about networks. Mysteries, fakes, myths. All my experience as a man who built ISPs. I'll try in easiest way explain:

1. What is a network

2. What technology of access mean for end-user. What end-user will receive in excellent condition and what in real

3. Cables and wires

4. Switches and routers....

5. Tricks and fakes of your isp's

6. E tc

In some places i'll post faq with real tech answers(not that what you'll receive on call-center). Your question suggestions and remarks i'll add to this article. I'll try simple as i can explain how you can build your home net with different tricks

P.S. All what described in this article i seen in real. You can correct me

P.P.S2. I'll add more info in time. It really hard to move information from head to web

old tech but still works. There are really hudge ammount of forgotted hosts and nets. And it still work now.

As example: on my facility was inernet access 1MB to averyone. I call to central office and one old geeck come and... and connect our facility to old bnc cale from 197x. This was mirracle 10MB/s ... And this cable still work... Now my facility have fiberoptics access

Now on shop you can buyrouter for any price and any capabilities. All routers are manageable devices. You can change configuration of any router.

Router can be multitech like

1. Fiber optics

2. Ethernet

3. DOSCICS

.... etc

Q: What is access point

A: Access point is any device that provide point to multipoint wireless connection like WIFI, Bluetuth.....

Q: What is network firewall

A:This is really big class of hardware devices that work like a networking filters. Note that Firewall is not a router and router is not firewall. Router can provide some firewall functions. Firewalls can simply protect your equipment from DDOS

1-2-3 you can buy all-in-one device. but price from this device starts from 100USD

Step 6: ISP Tricks

I'll add in time more tricks

Q:I have XX Mb/S and this is cool

A: wrong

There are two definition that ISP use

1. Quarantined speed – mean that you’ll receive XXMb/S in 99.9% of time. Usually this is Business and Industry

2. Speed – max “Speed” that can be reached

A2:Usually ISP use NETWORK BALANCING

methods. Ex: on street 20 Houses. Every house connected using 100Mb/S link and any user have 100Mb/s repaired speed. 20Houses connected using one link (ISP-SWITCH-USERS) 100/1GMb/s. When one user download movie from torrent – he has full bandwidth. When 4 users will be download movie – start to work balancing system, and users will get speed down.

100Mb/s link can be divided equally to 100 users, and this users even newer notice that

1G link = 1000-5000 users with NOT GUARANTEED speed of 100Mb/s

10G link 20000-100000

Q: You are kidding? On my office\home I check internet connection via bandwidth test I have really 100500Mb/s

A: In this case works balancing method too. It can be packet aggregation

In a packet-based communications network, packet aggregation is the process of joining multiple packets together into a single transmission unit, in order to reduce the overhead associated with each transmission.

Packet aggregation is useful in situations where each transmission unit may have significant overhead (preambles, headers, cyclic redundancy check, etc.) or where the expected packet size is small compared to the maximum amount of information that can be transmitted.